Q. I sometimes receive e-mail messages with a “winmail.dat” file attached that I cannot open. Why does this happen, and what can I do to fix it? A. The winmail.dat file usually appears because ...

A file that contains RTF format codes in order to support rich text in email messages. WINMAIL.DAT is a UUencoded file that is sent from a Microsoft Outlook or Exchange email client. If the ...

If you've ever received a forward from an Outlook user in Mail.app containing an attached winmail.dat file, you probably scratched your head wondering why this strange file ended up in your inbox ...

Letter Opener converts winmail.dat attachments on the fly ... you’ll see two unobtrusive lines of text above the From field that show that Letter Opener is at work for you.

I was confused by your answer regarding winmail.dat. The file cannot be opened traditionally, at least to obtain what the receiver believes to be valuable contents. Rather, it’s used internally ...

Many times when receiving mail attachments with the new Exchange-enabled Microsoft Entourage v.X from Windows users, you will get a winmail.dat file that is inaccessible under Mac OS X.